Effects of incompressibility $K_{0}$ in heavy-ion collisions at intermediate energies
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866913360585424896 |
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| author | Long, Xiao-Xiao Wei, Gao-Feng |
| author_facet | Long, Xiao-Xiao Wei, Gao-Feng |
| contents | Within the possible least uncertainty on the nuclear incompressibility $K_{0}$, we examine effects of $K_{0}$ in heavy-ion collisions at intermediate energies. Based on simulations of Au + Au collision at 400 MeV/nucleon using an isospin- and momentum-dependent transport model, we find that the incompressibility $K_{0}$ indeed affects significantly the attainable density in central regions, and thus the particle productions and/or distributions at final states, e.g., nucleon rapidity distributions and yields of charged pions. Nevertheless, through examining the free neutron over proton ratios $n/p$, the neutron-proton differential transverse and directed flows as well as the charged pion ratio $π^{-}/π^{+}$ and its kinetic energy distribution, we find that these observables are less affected by the uncertainty of $K_{0}$, but mainly sensitive to the slope of symmetry energy at the saturation density. We also compare and discuss our results with the corresponding data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_12912 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Effects of incompressibility $K_{0}$ in heavy-ion collisions at intermediate energies Long, Xiao-Xiao Wei, Gao-Feng Nuclear Theory Nuclear Experiment Within the possible least uncertainty on the nuclear incompressibility $K_{0}$, we examine effects of $K_{0}$ in heavy-ion collisions at intermediate energies. Based on simulations of Au + Au collision at 400 MeV/nucleon using an isospin- and momentum-dependent transport model, we find that the incompressibility $K_{0}$ indeed affects significantly the attainable density in central regions, and thus the particle productions and/or distributions at final states, e.g., nucleon rapidity distributions and yields of charged pions. Nevertheless, through examining the free neutron over proton ratios $n/p$, the neutron-proton differential transverse and directed flows as well as the charged pion ratio $π^{-}/π^{+}$ and its kinetic energy distribution, we find that these observables are less affected by the uncertainty of $K_{0}$, but mainly sensitive to the slope of symmetry energy at the saturation density. We also compare and discuss our results with the corresponding data. |
| title | Effects of incompressibility $K_{0}$ in heavy-ion collisions at intermediate energies |
| topic | Nuclear Theory Nuclear Experiment |
| url | https://arxiv.org/abs/2402.12912 |